Processing

Please wait...

Settings

Settings

Goto Application

1. WO2007040572 - TRANSMISSION OF INFORMATION ON AN AUXILIARY CHANNEL

Publication Number WO/2007/040572
Publication Date 12.04.2007
International Application No. PCT/US2005/045170
International Filing Date 13.12.2005
IPC
H04N 5/00 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
H04N 7/24 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
24Systems for the transmission of television signals using pulse code modulation
H04N 5/44 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
44Receiver circuitry
CPC
H04N 21/23412
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23Processing of content or additional data; Elementary server operations; Server middleware
234Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
23412for generating or manipulating the scene composition of objects, e.g. MPEG-4 objects
H04N 21/2383
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23Processing of content or additional data; Elementary server operations; Server middleware
238Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
2383Channel coding ; or modulation; of digital bit-stream, e.g. QPSK modulation
H04N 21/426
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
41Structure of client; Structure of client peripherals
426Internal components of the client ; ; Characteristics thereof;
H04N 21/4382
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
438Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
4382Demodulation or channel decoding, e.g. QPSK demodulation
H04N 21/4383
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
438Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
4383Accessing a communication channel
H04N 5/455
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
44Receiver circuitry ; for the reception of television signals according to analogue transmission standards;
455Demodulation-circuits
Applicants
  • THOMSON LICENSING [FR]/[FR] (AllExceptUS)
  • BELOTSERKOVSKY, Maxim, Borisovich [US]/[US] (UsOnly)
  • MARKMAN, Ivonete [BR]/[US] (UsOnly)
  • EDDE, Gabriel, Alfred [US]/[US] (UsOnly)
Inventors
  • BELOTSERKOVSKY, Maxim, Borisovich
  • MARKMAN, Ivonete
  • EDDE, Gabriel, Alfred
Agents
  • TRIPOLI, Joseph, S.
Priority Data
60/721,42728.09.2005US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TRANSMISSION OF INFORMATION ON AN AUXILIARY CHANNEL
(FR) TRANSMISSION DE L'INFORMATION SUR UN CANAL AUXILIAIRE
Abstract
(EN)
A transmitter comprises an ATSC (Advanced Television Systems Committee) modulator and an auxiliary channel (AC) discrete multitone (DMT) modulator. The ATSC modulator provides an ATSC signal for broadcast in a channel for communicating a high definition television (HDTV) service. The DMT modulator receives auxiliary data for the HDTV service and modulates this auxiliary data to provide an AC signal for broadcast in the same channel, i.e., the AC signal is a co-channel interfering signal to the broadcast ATSC signal. In particular, the DMT modulator modulates the auxiliary data such that the AC signal imitates one, or more, spectral properties of an NTSC (National Television Systems Committee) broadcast signal. In a complementary fashion, a receiver comprises an ATSC demodulator, for recovery of a high definition television (HDTV) signal, and a discrete multitone (DMT) demodulator, for recovery of the auxiliary data.
(FR)
Emetteur comprenant un modulateur ATSC (Advanced Television Systems Committee) et un modulateur à multitonalité discrète (DMT) pour canal auxiliaire (AC). Le modulateur ATSC fournit un signal ATSC pour diffusion sur un canal en vue de la communication d'un service de télévision à haute fidélité (HDTV). Le modulateur DMT reçoit des données auxiliaires pour le service HDTV, données qu'il module pour fournir un signal AC en vue de la diffusion sur le même canal ; en d'autres termes, signal CA est un signal interférant par canal commun avec le signal ATSC. En particulier, le modulateur DMT module les données auxiliaires de sorte que le signal AC imite une, voire plusieurs, propriétés spectrales d'un signal de diffusion NTSC. De façon complémentaire, un récepteur comprend un démodulateur ATSC récupérant un signal de télévision à haute définition (HDTV) signal, et un démodulateur à multitonalité discrète (DMT) récupérant les données auxiliaires.
Also published as
EP5853973
Latest bibliographic data on file with the International Bureau